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// RUN: %clang_cc1 -std=c++11 %s -verify
// expected-no-diagnostics
// C++98 [class.copy]p10 / C++11 [class.copy]p18.
// The implicitly-declared copy assignment operator for a class X will have the form
// X& X::operator=(const X&)
// if [every direct subobject] has a copy assignment operator whose first parameter is
// of type 'const volatile[opt] T &' or 'T'. Otherwise, it will have the form
// X &X::operator=(X&)
struct ConstCopy {
ConstCopy &operator=(const ConstCopy &);
};
struct NonConstCopy {
NonConstCopy &operator=(NonConstCopy &);
};
struct DeletedConstCopy {
DeletedConstCopy &operator=(const DeletedConstCopy &) = delete;
};
struct DeletedNonConstCopy {
DeletedNonConstCopy &operator=(DeletedNonConstCopy &) = delete;
};
struct ImplicitlyDeletedConstCopy {
ImplicitlyDeletedConstCopy &operator=(ImplicitlyDeletedConstCopy &&);
};
struct ByValueCopy {
ByValueCopy &operator=(ByValueCopy);
};
struct AmbiguousConstCopy {
AmbiguousConstCopy &operator=(const AmbiguousConstCopy&);
AmbiguousConstCopy &operator=(AmbiguousConstCopy);
};
struct A : ConstCopy {};
struct B : NonConstCopy { ConstCopy a; };
struct C : ConstCopy { NonConstCopy a; };
struct D : DeletedConstCopy {};
struct E : DeletedNonConstCopy {};
struct F { ImplicitlyDeletedConstCopy a; };
struct G : virtual B {};
struct H : ByValueCopy {};
struct I : AmbiguousConstCopy {};
struct Test {
friend A &A::operator=(const A &);
friend B &B::operator=(B &);
friend C &C::operator=(C &);
friend D &D::operator=(const D &);
friend E &E::operator=(E &);
friend F &F::operator=(const F &);
friend G &G::operator=(G &);
friend H &H::operator=(const H &);
friend I &I::operator=(const I &);
};
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